Kokichi Sugihara, a world-recognized expert on crafting optical illusions, has really outdone himself.
My best guess is that the camera is angled precisely to create inaccurate impressions from both the viewer's perspective as well as the mirror reflection. When the hands turn the forms, they briefly take on strange shapes that don't jibe with the previous impressions
Sugihara quite rightly won second place at the Best Illusion of the Year competition this year with these odd cylinders.
-via Nerdcore
https://www.youtube.com/watch?v=SKpOKXAVjGo